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Commit Graph

18 Commits

Author SHA1 Message Date
Dan Gohman
3ceb7c0c47 Add utility routines for NSW multiply.
llvm-svn: 91664
2009-12-18 03:10:26 +00:00
Dan Gohman
6bb50740f4 Add utility routines for creating integer negation operators with NSW set.
Integer negation only overflows with INT_MIN, but that's an important case.

llvm-svn: 91662
2009-12-18 02:58:50 +00:00
Daniel Dunbar
d4a7e3e760 Use ExtractElementInst::Create instead of new; patch by Artur Pietrek!
llvm-svn: 89606
2009-11-22 18:27:43 +00:00
Duncan Sands
ec5d64fdd5 For the NSWSub support in the builder to actually be useable,
there need to be corresponding changes to the constant folders,
done in this patch.

llvm-svn: 82862
2009-09-26 15:35:35 +00:00
Dan Gohman
b9b2864a49 Revert 80959. It isn't sufficient to solve the full problem. And it
introduced regressions in the Ocaml bindings tests.

llvm-svn: 80969
2009-09-03 23:34:49 +00:00
Dan Gohman
e5ec3c1a26 Remove the API for creating ConstantExprs with the nsw, nuw, inbounds,
and exact flags. Because ConstantExprs are uniqued, creating an
expression with this flag causes all expressions with the same operands
to have the same flag, which may not be safe. Add, sub, mul, and sdiv
ConstantExprs are usually folded anyway, so the main interesting flag
here is inbounds, and the constant folder already knows how to set the
inbounds flag automatically in most cases, so there isn't an urgent need
for the API support.

This can be reconsidered in the future, but for now just removing these
API bits eliminates a source of potential trouble with little downside.

llvm-svn: 80959
2009-09-03 22:17:40 +00:00
Dan Gohman
b0c54f532c Add convenience functions for creating nsw add operators.
llvm-svn: 78707
2009-08-11 20:20:39 +00:00
Dan Gohman
aed57ee5b0 Add convenience functions for creating inbounds GEPs.
llvm-svn: 78695
2009-08-11 17:57:01 +00:00
Benjamin Kramer
9a590500ea Make LLVMContext and LLVMContextImpl classes instead of structs.
llvm-svn: 78690
2009-08-11 17:45:13 +00:00
Benjamin Kramer
15a20278ff Fix struct/class mismatch.
llvm-svn: 78686
2009-08-11 17:27:20 +00:00
Dan Gohman
82b3823bb7 Add convenience functions for creating exact sdiv operators, and
use them in CreatePtrDiff.

llvm-svn: 78682
2009-08-11 17:05:24 +00:00
Dan Gohman
8e39bf3fb6 ConstantFolder and NoFolder no longer require their Context members.
llvm-svn: 78673
2009-08-11 15:56:12 +00:00
Owen Anderson
0ce2151b36 Move ConstantExpr to 2.5 API.
llvm-svn: 77494
2009-07-29 18:55:55 +00:00
Owen Anderson
7076f1ffb7 Push LLVMContext through the PatternMatch API.
llvm-svn: 75255
2009-07-10 17:35:01 +00:00
Nick Lewycky
d46a7b2d22 Remove the vicmp and vfcmp instructions. Because we never had a release with
these instructions, no autoupgrade or backwards compatibility support is
provided.

llvm-svn: 74991
2009-07-08 03:04:38 +00:00
Dan Gohman
5f6f8101d5 Split the Add, Sub, and Mul instruction opcodes into separate
integer and floating-point opcodes, introducing
FAdd, FSub, and FMul.

For now, the AsmParser, BitcodeReader, and IRBuilder all preserve
backwards compatability, and the Core LLVM APIs preserve backwards
compatibility for IR producers. Most front-ends won't need to change
immediately.

This implements the first step of the plan outlined here:
http://nondot.org/sabre/LLVMNotes/IntegerOverflow.txt

llvm-svn: 72897
2009-06-04 22:49:04 +00:00
Dan Gohman
8edffdd299 Fix the name of the include guard to match the filename.
llvm-svn: 58310
2008-10-28 00:52:46 +00:00
Duncan Sands
77e09ca5d0 Rename this, in case people think that NullFolder
has something to do with folding null values.

llvm-svn: 54725
2008-08-13 08:56:48 +00:00